CN102251152A - Nickel base alloy applied to electrode of spark plug and preparation method thereof - Google Patents
Nickel base alloy applied to electrode of spark plug and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a nickel base alloy applied to an electrode of a spark plug and a preparation method thereof. The nickel base alloy comprises the components of (in percentage by weight, following the same): 0.5%-2.5% of aluminum, 0.5%-2.5% of silicon, 0-0.5% of niobium, 0-0.2% of titanium, 0-0.2% of zirconium 0.6-1.0% of manganese, 0.05-0.2% of yttrium and/or cerium and the balance of Ni. According to the invention, Si and Al are used as main auxiliary elements of the alloy to form stable oxides, namely Al2O3 and SiO2; Y is used for improving the adhesivity of an oxidation film, so that a protective oxidation film is formed on the surface of a material at high temperature and the oxidation resistance of the electrode is improved; the content of Mn is usually limited, because the oxidation resistance of the alloy is reduced if the content of Mn is high; the forming of Al2O3 or the protective oxidation film can be promoted by adding a certain amount of Ti, Zr and Nb; the manganese can prevent the recrystallization of an aluminum alloy, improve the recrystallizing temperature, and obviously refine the recrystallized grains. The refining of the recrystallized grains is realized mainly by inhibiting the growth of the recrystallized grains by MnAl6 compound dispersoid particles.
Description
Technical field
Patent of the present invention relates to a kind of special alloy material and preparation method thereof, refers in particular to a kind of nickel-base alloy that is used for engine spark plug central electrode and lateral electrode and preparation method thereof, is mainly used in the making engine spark plug.
Background technology
Sparking plug is the vitals of engine ignition, and its effect is the high voltage pulse discharge of electricity that high-voltage conducting wires (nozzles line) is sent here, and air between disruptive spark plug two electrodes produces electrical spark with the mixed gas in this cylinder that ignites.So the most basic feature of sparking plug is to comprise two electrodes, one is central electrode, and one is lateral electrode.Because sparking plug is to be under the working order of High Temperature High Pressure to work, so require very high to the central electrode and the lateral electrode of sparking plug.Generally distinguishing according to material now has several sparking plug such as common sparking plug, platinum sparking plug, iraurite sparking plug, and wherein nickel-base alloy is specially adapted to produce the ignition plug for I. C. engine electrode.This mainly is that its phase stability is fairly good because nickel-base alloy has until its melting temperature with respect to other sparking plug such as cobalt base alloy and ferrous alloys and still keeps face-centred cubic structure; Iron alloy at high temperature is easy to carbonization or nitrogenize, though cobalt-base alloy has very good high-temperature corrosion resistance, but because its lower fire-resistant colored corrodibility, therefore also not as nickel-base alloy.In addition, with nickelalloy and cobalt-base alloy relatively, the difficult processing of iron alloy is because iron has body-centered cubic structure, so use maximum nickelalloy sparking plug that are still now.At home and abroad in the retrieval of document, finding has patent documentation report related to the present invention, mainly contains following several pieces:
1, number of patent application is EP 1 867 739 A1, and denomination of invention is the European patent of " nickel-base alloy and for the use of sparking-plug electrode "; This patent disclosure a kind of nickel-base alloy that has silicon and aluminium additive, its interalloy contains:
1.5 to the silicon of 2.5 weight percents,
1.5 to the aluminium of 3 weight percents,
The manganese of 0 to 0.5 weight percent,
0.05 to 0.2, the combination of the zirconium of the titanium of weight percent and 0.1 to 0.3 weight percent,
Wherein, zirconium can be partly or entirely alternative with the hafnium of double amount.
Alloy also can be with the ytterbium and 0.05 to 0.3 of 0.05 to 0.2 weight percent, and titanium and zirconium are replaced in the lanthanum combination of weight percent.This alloy is particularly suitable for producing the electrode of sparking plug.
2, number of patent application is the German Patent of DE 102 24 891 A1, proposed to be used for a kind of nickel-base alloy of sparking-plug electrode, it contains the silicon of 1.8 to 2.2 weight percents, 2 to 2.4 weight percent aluminium, 0.05 to 0.1 weight percent ytterbium and/or hafnium and/or zirconium, all the other are nickel.According to the explanation of German patent DE 102 24 891 A1, though the content of ytterbium is extremely small, show good high-temperature-antioxidant property, especially fit together with aluminium and silicon, just can allow alloy obtain according to good especially scale resistance of the present invention.And definite alloy should try one's best and not contain manganese, because manganese can damage the oxidation resistent susceptibility of alloy greatly.
3, number of patent application is DE 29 36 312 C3 German Patents, a kind of sparking plug is proposed, silicon by 0.3 to 3 weight percent, maximum to 0.5 weight percent manganese, 0.2 to 3 weight percent chromium, and/or 0.2 to 3 weight percent aluminium, adding content in all the other alloys of forming for nickel is the ytterbium of 0.01 to 1 weight percent.The corrosive stability that ytterbium should be able to improve the anti-oxidant of nickelalloy and be caused by plumbous oxide.Manganese content is limited in known nickelalloy for guaranteeing the minimum content degree of abundant deoxidation and reduction and abundant desulfurization.
4, number of patent application is the German Patent of DE 2936312, also discloses a kind of nickel-base alloy, contains 0.2 wt%-3 wt% Si, is not more than 0.5 wt% Mn, 0.2 wt%-3 wt% Al, 0.01 wt%-1 wt% Y, 0.2 wt%-3 wt% Cr, surplus Ni.For making more resistance to oxidation and the fire-resistant flower corrosion when being used for sparking-plug electrode of this nickel-base alloy, Si content is preferably 0.5 wt%-2.5 wt%, and Al content is preferably 0.5 wt%-2.5 wt%, and Y content is preferably 0.1wt%-0.5 wt%.Yet a shortcoming of this nickel-base alloy is to contain Mn as alloying element, because Mn has negative effect to oxidation-resistance.In addition, also have a shortcoming to be, Y content is that 0.1wt%-0.5wt% can cause forming intermetallic compound, i.e. second phase, and as Ni17Y2, this second relative oxidation-resistance also has negative effect.Especially this second can cause corrosion or penetrable material surface protection oxide film when workpiece surface occurs.
From the sparking-plug electrode material that the existing as can be seen nickel-base alloy of above-mentioned patent documentation is made, contain mostly in the alloy of Al and all contain Mn, manganese can stop the recrystallization process of aluminium alloy, improves recrystallization temperature, and remarkable refinement recrystal grain.The refinement of recrystal grain mainly is to the recrystal grain inhibition of having grown up by MnAl6 compound dispersoid particle.But because the manganese amount increases, weaken the resistance to corrosion of steel, reduce welding property, all wish to reduce as much as possible the content of Mn again, therefore and be necessary this is improved controlling its influence, but can influence the influence of sparking plug others so again, to the oxidation-resistance of sparking plug.
Summary of the invention
The deficiency that the objective of the invention is to the sparking-plug electrode material made at existing nickel-base alloy proposes a kind of Mn that can reduce to a kind of nickel-base alloy that is used for sparking-plug electrode of the influence of the oxidation-resistance of sparking plug and preparation method thereof.
The objective of the invention is to be achieved through the following technical solutions, a kind of nickel-base alloy that is used for engine spark plug central electrode and lateral electrode, nickel-base alloy comprises following component (weight percent, as follows): 0.5%～2.5% aluminium, 0.5%～2.5% silicon, 0～0.5% niobium, 0～0.2% titanium, 0～0.2% zirconium, 0.6%～1.0% manganese, 0.05%～0.2% yttrium and or cerium, surplus is Ni.
Wherein, allow aluminium silicon constitute stable oxide, i.e. Al2O3 and SiO2.Silicon is oxidized into SiO2 from about 500oC, and has improved the erosion-resisting stability of nickelalloy thus.When silicone content was less than 0.5 weight percent, the effect that forms oxide compound should be regarded as abundant not enough.Silicon components will improve the scaling loss degree greater than 2.5 weight percents.So, should contain the silicon of 0.5 to 2.5 weight percent, preferably 2.3 weight percents according to the alloy of invention;
Aluminium can improve the intensity of nickelalloy as alloy compositions, and improves the corrosion resistance of alloy by formation Al2O3.When the alloy that is used on the sparking plug suffers under the increase in temperature situation,, can obtain erosion resistance and obviously improve from the alloy of 0.5 weight percent compared with aluminium content.Aluminium content is during greater than 2.5 weight percents, and the workability of nickelalloy just can increase difficulty, if carry out cold presswork, such as producing a stretching process that has the sparking plug combined electrode of copper core and nickelalloy outer cover usually, the wearing and tearing of mould are with suitable severity.Therefore, the component according to aluminium in the alloy of invention should be preferably 2.3 weight percents between 0.5 to 2.5 weight percent;
The effect that adds manganese is except allowing alloy deoxidation and reduction when melting, and manganese can also stop the recrystallization process of aluminium, improves recrystallization temperature, and can remarkable refinement recrystal grain.Therefore adopt higher manganese content, preferably between 0.6 to 1.0 weight percent.The refinement of recrystal grain mainly is to the recrystal grain inhibition of having grown up by MnAl6 compound dispersoid particle;
Add yttrium or cerium and improve the oxide film adhesivity, yttrium (Y) or cerium (ce) play and improve the adhering effect of oxide film, thereby at high temperature form the protection oxide film at material surface, improve the oxidation-resistance of electrode;
An amount of formation of adding Ti, Zr, Nb promotion Al2O3 or protection oxide film.
At least may further comprise the steps in the making step of this nickel-base alloy:
1, nickel is formed a kind of zone of oxidation of porosity and looseness separately, and nickel is placed in the alloying furnace, allow oxygen spread by the zone of oxidation of the porosity and looseness of nickel, have an effect with the nickel that is in bottom, it is oxidized to cause nickel to continue;
2, when aerating oxygen, add aluminium, silicon, manganese, yttrium and/or cerium, niobium, titanium and zirconium simultaneously.
The electrode of nickel-base alloy sparking plug is made and is all adopted vacuum induction furnace smelting and pour into ingot casting, through hot cogging and rolling technology it is rolled into the wire rod that diameter is 10mm then.It is the wire rod of 1.5mm * 2.8mm that gren rod is drawn into wire rod and the cross-sectional dimension that diameter is 4.4mm.The former is used for making the central electrode of sparking plug through cold machine-shapings such as heat conduction copper core are installed, and the latter is used to adopt resistance welding to make lateral electrode to spark-plug body.
The invention has the advantages that: adopt Si, Al main component as this alloy, form stable oxide, be Al2O3 and SiO2, and yttrium (Y) or cerium (ce) play the adhering effect of raising oxide film, thereby at high temperature form the protection oxide film, improve the oxidation-resistance of electrode at material surface; Mn content is restricted usually, because the high antioxidant property that can reduce alloy of Mn content; And add Ti, Zr in right amount, Nb can promote Al
2O
3Or the formation of protection oxide film; Manganese can stop the recrystallization process of aluminium alloy, improves recrystallization temperature, and can remarkable refinement recrystal grain.The refinement of recrystal grain mainly is to the recrystal grain inhibition of having grown up by MnAl6 compound dispersoid particle.
Embodiment
The present invention will be further described below in conjunction with embodiment.
A kind of nickel-base alloy that is used for engine spark plug central electrode and lateral electrode, nickel-base alloy comprises following component (weight percent, as follows): 0.5%～2.5% aluminium, 0.5%～2.5% silicon, 0.6%～1.0% manganese, 0.05%～0.2% yttrium and/or cerium, 0～0.5% niobium, 0～0.2% titanium, 0～0.2% zirconium, surplus is Ni.
Wherein, allow aluminium silicon constitute stable oxide, i.e. Al2O3 and SiO2.Silicon is oxidized into SiO2 from about 500oC, and has improved the erosion-resisting stability of nickelalloy thus.When silicone content was less than 0.5 weight percent, the effect that forms oxide compound should be regarded as abundant not enough.Silicon components will improve the scaling loss degree greater than 2.5 weight percents.So, should contain the silicon of 0.5 to 2.5 weight percent, preferably 2.3 weight percents according to the alloy of invention;
Aluminium can improve the intensity of nickelalloy as alloy compositions, and improves the corrosion resistance of alloy by formation Al2O3.When the alloy that is used on the sparking plug suffers under the increase in temperature situation,, can obtain erosion resistance and obviously improve from the alloy of 0.5 weight percent compared with aluminium content.Aluminium content is during greater than 2.5 weight percents, and the workability of nickelalloy just can increase difficulty, if carry out cold presswork, such as producing a stretching process that has the sparking plug combined electrode of copper core and nickelalloy outer cover usually, the wearing and tearing of mould are with suitable severity.Therefore, the component according to aluminium in the alloy of invention should be preferably 2.3 weight percents between 0.5 to 2.5 weight percent;
The effect that adds manganese is except allowing alloy deoxidation and reduction when melting, and manganese can also stop the recrystallization process of aluminium, improves recrystallization temperature, and can remarkable refinement recrystal grain.Therefore adopt higher manganese content, preferably between 0.6 to 1.0 weight percent.The refinement of recrystal grain mainly is to the recrystal grain inhibition of having grown up by MnAl6 compound dispersoid particle;
Add yttrium or cerium and improve the oxide film adhesivity, yttrium (Y) or cerium (ce) play and improve the adhering effect of oxide film, thereby at high temperature form the protection oxide film at material surface, improve the oxidation-resistance of electrode;
An amount of formation of adding Ti, Zr, Nb promotion Al2O3 or protection oxide film.
At least may further comprise the steps in the making step of this nickel-base alloy:
1, nickel is formed a kind of zone of oxidation of porosity and looseness separately, and nickel is placed in the alloying furnace, allow oxygen spread by the zone of oxidation of the porosity and looseness of nickel, have an effect with the nickel that is in bottom, it is oxidized to cause nickel to continue;
2, when aerating oxygen, add aluminium, silicon, manganese, yttrium and/or cerium, niobium, titanium and zirconium simultaneously.
The present invention adopts Si, the Al main ancillary component as this alloy, forms stable oxide, i.e. Al
2O
3And SiO
2, and yttrium (Y) or cerium (ce) play the adhering effect of raising oxide film, thus at high temperature form the protection oxide film at material surface, improve the oxidation-resistance of electrode; Mn content is restricted usually, because the high antioxidant property that can reduce alloy of Mn content; And add Ti, Zr in right amount, Nb can promote Al
2O
3Or the formation of protection oxide film; Add Co and can improve thermotolerance and improve creep strength, improve high-temperature corrosion resistance.
As to further improvement of the present invention, can in alloy, add weight percent less than with the cobalt that equals 2%, add Co and can improve thermotolerance and improve creep strength, improve high-temperature corrosion resistance.
As to further improvement of the present invention, can in alloy, add the carbon of weight percent 0.01wt.%～0.07%.
As to further improvement of the present invention, can in alloy, add the magnesium of weight percent 0.001wt.%～0.01%.
As to further improvement of the present invention, can in alloy, add weight percent less than with the Co that equals 2 %.
But it should be noted: the alloy compositions total amount in the nickel-base alloy less than with equal 5 %.
The electrode of nickel-base alloy sparking plug is made and is all adopted vacuum induction furnace smelting and pour into ingot casting, through hot cogging and rolling technology it is rolled into the wire rod that diameter is 10mm then.It is the wire rod of 1.5mm * 2.8mm that gren rod is drawn into wire rod and the cross-sectional dimension that diameter is 4.4mm.The former is used for making the central electrode of sparking plug through cold machine-shapings such as heat conduction copper core are installed, and the latter is used to adopt resistance welding to make lateral electrode to spark-plug body.
The invention has the beneficial effects as follows:
By changing the composition and the proportioning thereof of nickel-base alloy, can effectively improve the overall performance of material; The following describes of the effect of various alloying constituents to alloy.
Al is by forming Al on the surface of nickel-base alloy
2O
3The protection oxide film, thus the oxidation-resistance and the elevated temperature corrosion resistant of sparking-plug electrode material improved, especially play and improve the consumptive effect of fire-resistant flower corrosion, and the hot strength of sparking-plug electrode improves with the increase of Al content.Al content such as less than 0.5 wt% can not fully realize its effect; But when its content surpassed 2.5 wt%, 20 ℃ of resistivity down can become greatly, and the while cold machine-shaping and the weldability of counter electrode material has very big negative effect.Therefore, sparking-plug electrode of the present invention is controlled at the Al content that adds between 0.5wt.%～2.5wt.% with nickel-base alloy.
Silicon is oxidized into SiO from about 500oC
2, and improved the erosion-resisting stability of nickelalloy thus, thus improve oxidation-resistance and the elevated temperature corrosion resistant and the hot strength of sparking-plug electrode, especially play the effect that improves fire-resistant expense consumption.Si content such as less than 0.5 wt% can not fully realize its effect; But when its content surpassed 2.5 wt%, the resistivity under 20 ℃ can become greatly, influences the cold machine-shaping and the welding property of electrode materials simultaneously.Therefore, sparking-plug electrode of the present invention is controlled at 0.5wt.%～2.5wt.% with nickel-base alloy with the adjustment of Si content.
Mn has the effect that improves the nickel-base alloy hot strength, and plays the effect of deoxidization desulfuration in the ingot casting fusion process.But, when the content of Mn does not reach gratifying effect during less than 0.1wt.%; And when the content of manganese surpasses 1.0 wt.%, then can seriously reduce the high-temperature oxidation resistance and the erosion resistance of alloy.Therefore, sparking-plug electrode of the present invention is controlled at Mn content between 0.1wt.%～1.0wt.% with nickel-base alloy.
Sparking-plug electrode of the present invention is with the Y that has added 0.05wt.%～0.2wt.% in the nickel-base alloy and/or other rare earth elements; strengthen the adhesion of protection oxide film on Superalloy Substrate; hinder oxonium ion and be diffused into Superalloy Substrate inside, make the nickel-base alloy electrode materials of low alloying increase high temperature oxidation resistance and fire-resistant expense consumption.Y content falls flat when being lower than 0.03 wt.%; Y content will form intermetallic compound when surpassing 0.2 wt.%, and the oxidation-resistance and the erosion resistance of this intermetallic compound counter electrode material have negative effect.In addition, this intermetallic compound influences the central electrode material and fills production processes such as the machining deformation of copper core or the welding of lateral electrode material.
An amount of interpolation Ti, Zr, Nb can promote the formation of protection oxide films such as Al2O3.
Use Cr and can form chromium oxide layer on the surface of nickel-base alloy, increase the erosion resistance of nickel-base alloy electrode materials as alloying constituent.But, the oxidization and infiltration of chromium oxide layer is higher than the oxidization and infiltration of aluminum oxide, silicon oxide layer, can form thicker chromium oxide layer, when bearing spark discharge, the damage that is easy to break of this thick chromium oxide layer, thereby make exposed Superalloy Substrate be easy to be corroded, the fire-resistant expense consumption of nickel-base alloy electrode that therefore contains Cr is lower.So, do not comprise Cr in the nickel-base alloy composition of the present invention.
Adding C can improve the physical strength under the high temperature in the nickel-base alloy, makes that sparking-plug electrode in use is difficult for producing the electrode deformation phenomenon that causes because of thermal stresses, and formed carbide can suppress too growing up of electrode crystal grain effectively at the sparking plug on period.Sparking-plug electrode nickel-base alloy of the present invention, the C of adding 0.01wt.%～0.07wt.%.C content does not have the effect that increases hot strength during less than 0.01wt.%; If C content is higher than 0.07wt.%, then the resistance to deformation of alloy increases, and especially the central electrode material is difficult to fill plastic workings such as copper core, and the carbide that causes simultaneously forming reduces the oxidation-resistance of nickel-base alloy greatly.
An amount of Mg can improve nickel-base alloy, especially contain the high-temperature oxidation resistance of the nickel-base alloy of Si, further improves fire-resistant expense consumption, and the refining agent as deoxidization desulfuration improves metallurgical quality simultaneously, purifies the alloy crystal boundary indirectly, thereby improves alloy property.When Mg content during, fall flat less than 0.001wt.%; When Mg content surpasses 0.01wt.%, the thermoplasticity of alloy is descended, cause the forge hot cracking.Therefore, sparking-plug electrode of the present invention is controlled at 0.001wt.%～0.01wt.% with the Mg content of nickel-base alloy.
Adding Co can increase the thermotolerance of nickel-base alloy, high-temperature corrosion resistance and improve creep strength, take all factors into consideration from performance and material price, sparking-plug electrode of the present invention with nickel-base alloy with Co content be controlled at less than with equal 2 wt.%.
In order to ensure good oxidation-resistance, the total amount of nickel-base alloy interalloy element preferably should be no more than 5 wt %.
Embodiment one
A kind of nickel-base alloy that is used for engine spark plug central electrode and lateral electrode, nickel-base alloy comprise following component (weight percent, as follows): 0.5% aluminium, 2.5% silicon, 0.6% manganese, 0.05% yttrium and 0.2% cerium, 0.5% niobium, 0.2% zirconium, surplus is Ni.
At least may further comprise the steps in the making step of this nickel-base alloy:
1, nickel is formed a kind of zone of oxidation of porosity and looseness separately, and nickel is placed in the alloying furnace, allow oxygen spread by the zone of oxidation of the porosity and looseness of nickel, have an effect with the nickel that is in bottom, it is oxidized to cause nickel to continue;
2, when aerating oxygen, add aluminium, silicon, manganese, yttrium and/or cerium, niobium, titanium and zirconium according to prescription simultaneously.
Embodiment two
A kind of nickel-base alloy that is used for engine spark plug central electrode and lateral electrode, nickel-base alloy comprise following component (weight percent, as follows): 2.5% aluminium, and 0.5% silicon, 1.0% manganese, 0.2% yttrium and/or cerium, 0.2% titanium, surplus is Ni.
At least may further comprise the steps in the making step of this nickel-base alloy:
1) carries out proportioning according to following weight percent component;
2) be placed in the alloying furnace with the independent zone of oxidation that forms a kind of porosity and looseness of nickel, and with nickel, allow oxygen spread by the zone of oxidation of the porosity and looseness of nickel, have an effect with the nickel that is in bottom, it is oxidized to cause nickel to continue;
3) when aerating oxygen, add aluminium, silicon, manganese, yttrium and/or cerium, niobium, titanium and zirconium according to prescription simultaneously.
Embodiment three
A kind of nickel-base alloy that is used for engine spark plug central electrode and lateral electrode, nickel-base alloy comprises following component (weight percent, as follows): 2.5% aluminium, 0.5% silicon, 1.0% manganese, 0.2% yttrium, 0.2% titanium, in alloy, also be added with weight percent less than with the magnesium of the carbon that equals 2% cobalt, 0.01wt.%～0.07%, 0.001wt.%～0.01% and less than with the Co that equals 2 %; But it should be noted: the alloy compositions total amount in the nickel-base alloy less than with equal 5 %., surplus is Ni.
At least may further comprise the steps in the making step of this nickel-base alloy:
1, nickel is formed a kind of zone of oxidation of porosity and looseness separately, and nickel is placed in the alloying furnace, allow oxygen spread by the zone of oxidation of the porosity and looseness of nickel, have an effect with the nickel that is in bottom, it is oxidized to cause nickel to continue;
2, when aerating oxygen, add aluminium, silicon, manganese, yttrium and/or cerium, niobium, titanium, zirconium, cobalt, carbon, magnesium and Co according to prescription simultaneously.
Claims (9)
1. nickel-base alloy that is used for sparking-plug electrode, it is characterized in that: nickel-base alloy comprises following weight percent component; 0.5%～2.5% aluminium, 0.5%～2.5% silicon, 0.6%～1.0% manganese, 0.05%～0.2% yttrium and/or cerium, 0～0.5% niobium, 0～0.2% titanium, 0～0.2% zirconium, surplus is Ni.
2. the nickel-base alloy that is used for sparking-plug electrode as claimed in claim 1 is characterized in that: nickel-base alloy comprises following component according to weight percent: 0.5% aluminium, 2.5% silicon, 0.6% manganese, 0.05% yttrium and 0.2% cerium, 0.5% niobium, 0.2% zirconium, surplus are Ni.
3. the nickel-base alloy that is used for sparking-plug electrode as claimed in claim 1 is characterized in that: nickel-base alloy comprises following component according to weight percent: 2.5% aluminium, and 0.5% silicon, 1.0% manganese, 0.2% yttrium, 0.2% titanium, surplus is Ni.
4. as claim 1 or the 2 or 3 described nickel-base alloys that are used for sparking-plug electrode, it is characterized in that: in alloy, add weight percent less than with the cobalt that equals 2%.
5. as claim 1 or the 2 or 3 described nickel-base alloys that are used for sparking-plug electrode, it is characterized in that: nickel-base alloy comprises the carbon of 0.01wt.%～0.07%.
6. as claim 1 or the 2 or 3 described nickel-base alloys that are used for sparking-plug electrode, it is characterized in that: nickel-base alloy comprises the magnesium of 0.001wt.%～0.01%.
7. as claim 1 or the 2 or 3 described nickel-base alloys that are used for sparking-plug electrode, it is characterized in that: the alloy compositions total amount in the nickel-base alloy less than with equal 5 %.
8. one kind according to the described making method that is used for the nickel-base alloy of sparking-plug electrode of claim 1, it is characterized in that: may further comprise the steps at least in the making step of nickel-base alloy:
1) be placed in the alloying furnace with the independent zone of oxidation that forms a kind of porosity and looseness of nickel, and with nickel, allow oxygen spread by the zone of oxidation of the porosity and looseness of nickel, have an effect with the nickel that is in bottom, it is oxidized to cause nickel to continue;
2) when aerating oxygen, add aluminium, silicon, manganese, yttrium and/or cerium, niobium, titanium and zirconium simultaneously.
9. one kind according to the described making method that is used for the nickel-base alloy of sparking-plug electrode of claim 1, it is characterized in that: adopt Si, the Al main ancillary component as this alloy, form stable oxide, i.e. Al
2O
3And SiO
2, and yttrium (Y) or cerium (ce) play the adhering effect of raising oxide film, at high temperature form the protection oxide film at material surface, improve the oxidation-resistance of electrode; And add Ti, Zr in right amount, Nb can promote Al
2O
3Or the formation of protection oxide film; Add Co and can improve thermotolerance and improve creep strength, improve high-temperature corrosion resistance.
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| TWI662136B (en) * | 2018-11-28 | 2019-06-11 | 中國鋼鐵股份有限公司 | High nickel alloy and method for fabricating the same |
| CN110055440A (en) * | 2019-05-29 | 2019-07-26 | 南京达迈科技实业有限公司 | A kind of multicomponent alloy silk and preparation method thereof for spark plug |
| CN115380126A (en) * | 2019-12-20 | 2022-11-22 | Vsca股份有限公司 | Metal alloy |
| CN115380126B (en) * | 2019-12-20 | 2024-05-03 | Vsca股份有限公司 | Metal alloy |
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| CN102337425A (en) * | 2011-10-29 | 2012-02-01 | 重庆川仪自动化股份有限公司 | Ni-Al exothermic resistance alloy material |
| CN102586648B (en) * | 2012-03-09 | 2013-12-25 | 华北电力大学 | Zirconium alloy material for cathode of direct current arc air plasma torch and preparation method thereof |
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| CN102775047A (en) * | 2012-07-31 | 2012-11-14 | 苏州东方模具科技股份有限公司 | Bimetal opening mold for glass mold and preparation method of bimetal opening mold |
| CN102994807A (en) * | 2012-12-18 | 2013-03-27 | 南京达迈科技实业有限公司 | Nickel-yttrium alloy sparkplug electrode material and method for preparing same |
| CN105369067A (en) * | 2015-11-04 | 2016-03-02 | 重庆材料研究院有限公司 | Thermocouple material achieving stable temperature measurement in oxidizing medium and preparation method of thermocouple material |
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| TWI662136B (en) * | 2018-11-28 | 2019-06-11 | 中國鋼鐵股份有限公司 | High nickel alloy and method for fabricating the same |
| CN110055440A (en) * | 2019-05-29 | 2019-07-26 | 南京达迈科技实业有限公司 | A kind of multicomponent alloy silk and preparation method thereof for spark plug |
| WO2020237945A1 (en) * | 2019-05-29 | 2020-12-03 | 南京达迈科技实业有限公司 | Multi-element alloy wire for use in spark plug and manufacturing method therefor |
| CN115380126A (en) * | 2019-12-20 | 2022-11-22 | Vsca股份有限公司 | Metal alloy |
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